5 Inch Network High-definition Speed Dome User Manual
46
Appendix 2 Lightning & Surge Protection
This product adopts TVS plate lightning protection technology to avoid damage caused by pulse signal that is below 3000W, like
instantaneous lighting, surging, etc. According to the actual situation outdoors, necessary protection measures must be taken to secure
the electrical safety.
1. The distance between signal transmission line and High-voltage equipment or high-voltage cable is at least 50m.
2. Outdoor wiring should better be along the eaves as much as possible.
3. In the open field,
wiring should be buried underground in sealed steel pipe, and the steel-pipe should be one-point
grounding. Overhead routing method is forbidden.
4. In strong thunderstorm area or high induction voltage areas (such as high-voltage transformer substation), high power lightning
protection apparatus and lightning conductor are necessary to be appended.
5. The design for installation and wiring with lightning protection and grounding in mind should be combined with the lightning
protection consideration of the building, and conform to the related national stand
ards and industry standards.
6. The system should be equipotentially grounded, and the grounding equipment must satisfy double-request of system anti-jamming
and electric safety, and it must not appear short circuit and open circuit with the zero conductor of strong grid. When the system is
grounding individual, the resistance should be no more than 4Ω, the section al area of the grounding cable should be no less than
25mm
2
. For grounding instructions, please refer to the Installation Manual of Speed Dome.
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